Genetic Variant ITGB5:p.Lys756Gln (chr3-124764429-T-G) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_002213.5(ITGB5):c.2266A>C(p.Lys756Gln) variant causes a missense change. The variant allele was found at a frequency of 0.000000684 in 1,461,472 control chromosomes in the GnomAD database, with no homozygous occurrence. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. K756E) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

ITGB5
NM_002213.5 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 3.64

Publications

0 publications found

Variant links:

Genes affected

ITGB5 (HGNC:6160): (integrin subunit beta 5) This gene encodes a beta subunit of integrin, which can combine with different alpha chains to form a variety of integrin heterodimers. Integrins are integral cell-surface receptors that participate in cell adhesion as well as cell-surface mediated signaling. The alphav beta5 integrin is involved in adhesion to vitronectin. [provided by RefSeq, Aug 2017]

ITGB5 links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_002213.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
ITGB5	NM_002213.5	MANE Select	c.2266A>C	p.Lys756Gln	missense	Exon 14 of 15	NP_002204.2
ITGB5	NM_001354764.2		c.1942A>C	p.Lys648Gln	missense	Exon 14 of 15	NP_001341693.1
ITGB5	NM_001354765.1		c.1942A>C	p.Lys648Gln	missense	Exon 14 of 15	NP_001341694.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
ITGB5	ENST00000296181.9	TSL:1 MANE Select	c.2266A>C	p.Lys756Gln	missense	Exon 14 of 15	ENSP00000296181.4	P18084
ITGB5	ENST00000905025.1		c.2488A>C	p.Lys830Gln	missense	Exon 16 of 17	ENSP00000575084.1
ITGB5	ENST00000965613.1		c.2380A>C	p.Lys794Gln	missense	Exon 16 of 17	ENSP00000635672.1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.00000398

AC:

AN:

251336

AF XY:

0.00000736

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000544

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461472

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

726970

show subpopulations

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.00

AC:

AN:

33476

American (AMR)

AF:

0.00

AC:

AN:

44720

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.0000252

AC:

AN:

39690

South Asian (SAS)

AF:

0.00

AC:

AN:

86226

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53406

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1111672

Other (OTH)

AF:

0.00

AC:

AN:

60378

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.375

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

Cov.:

ExAC

AF:

0.00000824

AC:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.19

BayesDel_addAF

Benign

0.0079

BayesDel_noAF

Uncertain

-0.060

CADD

Uncertain

(source)

DANN

Uncertain

1.0

DEOGEN2

Pathogenic

0.83

Eigen

Uncertain

0.37

Eigen_PC

Uncertain

0.41

FATHMM_MKL

Uncertain

0.77

LIST_S2

Uncertain

0.94

M_CAP

Benign

0.066

MetaRNN

Uncertain

0.62

MetaSVM

Pathogenic

0.81

MutationAssessor

Uncertain

2.5

PhyloP100

3.6

PrimateAI

Uncertain

0.58

PROVEAN

Uncertain

-2.7

REVEL

Uncertain

0.56

Sift

Uncertain

0.0010

Sift4G

Uncertain

0.0060

Polyphen

0.66

Vest4

0.36

MutPred

0.68

Loss of methylation at K756 (P = 0.0039)

MVP

0.97

MPC

0.55

ClinPred

0.98

GERP RS

5.1

Varity_R

0.63

gMVP

0.81

Mutation Taster

=92/8

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.0

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over